ERGM2

LEP-i

[Uchida 2008] modifiedCarbon foilMCPelectronionionLEP-iPost accelerationcarbon foil+5kV16(22.5)

timetittecarbon foilMCPIon beamion:tielectron (te)Lstopstartstart,stopion ionLstartstopE/qm/qTime Of FlightFoil

CLUSTER/CISLEP-i9070503010[mm][mm][Uchida 2008] modifiedanodestart anodestop anode

Simulation(H+)zrr

-4900[V]-3500[V]-4850[V]-3700[V]ion beamelectronion MCPslit

sensorcPCcslit()start signalstop signal

(H+, He++, He+, O+)H+, He+, He++, O+2keV/q8keV/q=22.5degFoil folder2mmslitelectronionion beamr1 sector

TOF profile 2keV/qO+Arbitrary unitTime-of-flight[ns]H+He+He++O+020406080100120140simulationexperiment

TOF profile 8keV/qTime-of-flight[ns]Arbitrary unitH+He+He++O+020406080100120140simulationexperiment

start anoderadial 2STARTSTOP B-4900V=22.5degFoil folderradial2mmelectronionion beamr

0-2-4-6-8-10[deg]Arbitrary unitsimulationstart count ratestop count rateexperimentsimulation8keV/q

()B=-4500[V] : simulationB=-3500[V] : simulationstartstopStop MCPStart MCPr8keV/q

-4600-4400-4200-4000-3800-3600-3400[V]Arbitrary unitstart count ratestop count rateexperimentsimulation0.60.458keV/q

.E/q=2keV/q, 8keV/qH+, He++, He+, O+ .2keV/q, 8keV/q1002keV/qO+.startstop._i=0.6, _e=0.45

Future work22.5

Arbitrary unitTime-of-flight[ns]H+He+He++O+020406080100120140simulationexperimentTOF profile 2keV/q(50A)

TOF profile 8keV/q(50A)Time-of-flight[ns]Arbitrary unitH+He+He++O+020406080100120140simulationexperiment

Ring currentSolar windIonospheric plasmaPlasma sheetRing currentO+Which way?

cluster1:002:003:004:005:006:000:00

ERG

(2014?)ERG mission250km25000km(RBSP(NASA), ORBITALS())

ERGion0.1eV12eV5keV30keV200keV10eV20keV80keV2MeV20MeV0.5eV10eV10keV100eV25keV180keV

Ring current.LEP-iRing currentO+ionLEP-i

LEP-i(TOF unit)E/qvM/qincoming ion

Energy range:10eV/q25keV/qE/qRinnerRouterRc=(Rinner+Router)/2R=Router - Rinnerm: v : E: q: : E1

timetittecarbon foilMCPionion:tielectron (te)Lstopstartstart,stopion ionLstartstopE/qm/qTime Of FlightFoil

-4600-4400-4200-4000-3800-3600-3400[V]Arbitrary unit0.6start count ratestop count rateexperimentsimulation_se=0.75_i_i:0.6_i:0.18keV/q

Start150nsecstopMCPstop(22.5)timet0tetH+To++electronH+O++[Uchida 2008] modified150nsec

CLUSTER/CISLEP-i9070503010[mm][mm][Uchida 2008] modifiedanodestart anodestop anode

E/q ~10eV/qE/q ~23keV/q

TOF profile simulationH+He++He+O++O+E/q23keV/qE/q10eV/q

LEP-iEnergy range 10eV/q~25keV/qTime resolution 8secAngle resolution(azimuth) 22.5Angle resolution(elevation) 5(FWHM)Energy resolution 16% (FWHM)G-factor 2.6x10-3 cm2 sr keV/keV/22.5 LEP-i

angle 1.25deg

angle 3.25deg

angle 5.25deg

angle 7.25deg

angle 9.25deg

angle 11.25deg

B:-3500V

B:-3600V(B-100V)

B:-3700V(B-200V)

B:-3800V(B-300V)

B:-3900V(B-400V)

B:-4000V(B-500V)

B:-4100V(B-600V)

B:-4200V(B-700V)

B:-4300V(B-800V)

B:-4400V(B-900V)

B:-4500V(B-1000V)

***E/q=10eV/q**startstop*O+CO2CO+, C+**Ring current ion Energy density : 10 ~ 200keV

Plasma sheet Number density : 0.1 ~ 10 / cm^3

(EMIC)10keV-50keVIon

******Foil*

AMPTE/CCE

Energy range0.3 300 keV/qTime resolusion < 60secAngle resolusionEnergy resolusionMass resolusionG-factor

// Cluster //

Energy range 10 40000eV/qTime resolusionAngle resolusionEnergy resolusion 0.16Mass resolusionG-factor 2.16*10^-3cm^2 sr

*